// Copyright (C) Kumo inc. and its affiliates.
// Author: Jeff.li lijippy@163.com
// All rights reserved.
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published
// by the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <https://www.gnu.org/licenses/>.
//

#pragma once

#include <functional>
#include <nebula/future/type_fwd.h>

namespace nebula {

    template<typename T>
    using AsyncGenerator = std::function<Future<T>()>;

    template<typename T, typename V>
    class MappingGenerator;

    template<typename T, typename ComesAfter, typename IsNext>
    class SequencingGenerator;

    template<typename T, typename V>
    class TransformingGenerator;

    template<typename T>
    class SerialReadaheadGenerator;

    template<typename T>
    class ReadAheadGenerator;

    template<typename T>
    class PushGenerator;

    template<typename T>
    class MergedGenerator;

    template<typename T>
    struct Enumerated;

    template<typename T>
    class EnumeratingGenerator;

    template<typename T>
    class TransferringGenerator;

    template<typename T>
    class BackgroundGenerator;

    template<typename T>
    class GeneratorIterator;

    template<typename T>
    struct CancellableGenerator;

    template<typename T>
    class DefaultIfEmptyGenerator;

}  // namespace nebula
